Hopefully your job interview went well. We can only tell what's on the other side when we take that step, and whatever lies on the other side, you'll be alright.
If you found that there's nothing wrong with what you're doing (i.e the volunteer work, and your reputation in your community), and that you shouldn't be dropping those things that means the most to you, then perhaps the relationship ended due to a mismatch in values between yourself and your former partner, and things were not meant to be. With that, the best thing to do would be to go separate ways, keep moving forward, and appreciate the times you've had with her. Perhaps someone better would appear in your life at a later time, someone who is more supportive of what keeps you happy, and someone whom you can appreciate as well. Before that happens, surround yourself with your friends, and explore new places, or experience new things and hobbies that you couldn't do when you were in a relationship.
You've been given another chance at living a life that's free from the responsibilities in a relationship, but if someone else better does come into your life throughout your journey, welcome them with open arms and experience life with them. And if either of you feel that things aren't working out, then let each other go so that you both may find happiness elsewhere. For now, appreciate the experience that life has given you thus far, and use the time you have now to learn to be secured with yourself. Learn to be comfortable living alone.